f98738570d8c66e4c87bdec0d6d9ccb5f7de0421cc734e1af55664e6bf446f46

Analysis

max time kernel
165s
max time network
170s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231026-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231026-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
11-11-2023 13:40

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
Size

8.7MB
MD5

3fe7b88a9ba6c5acee4faae760642b78
SHA1

bae245bc98c516604838c6ce5a233f066de44a50
SHA256

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
SHA512

02abc8d4fe280306a9ac6a25d28cf174a8d51a43d98b6837bc129701d8c0ab486eebaeef11062b58c455627d4de7c8782b3828aa02891fe439ca1ca617038f95
SSDEEP

98304:g4K0/V2eKEDj+VK61qXXiQqwMwUa/f0OstejSUVv7Xk:g4K0/V2eKM+D4SQbMwX/f0Oskz

Score

8^/10

antivm persistence

Malware Config

Signatures

Adds new SSH keys 2 IoCs

Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.

persistence

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

Deletes itself 1 IoCs

Processes:

pid

1524
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
antivm

Virtualization/Sandbox Evasion
T1497

Processes:

cat

description ioc process

File opened for reading /proc/cpuinfo cat

pid
1524

description	ioc	process
File opened for reading	/proc/cpuinfo	cat

Deletes log files 1 TTPs 2 IoCs

Deletes log files on the system.

Indicator Removal

T1070

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

Enumerates running processes
Discovers information about currently running processes on the system

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimefreefreeuptimeuptimeuptimeuptimeuptimeuptimeuptimefreefreeuptimefreeuptimefreeuptimefreefreeuptimefreeuptimefreefreefreeuptimefreeuptimefreefree

description	ioc	process
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69cjournalctluptimeuptimefree

description	ioc	process
File opened for reading	/proc/513/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/84/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/self/stat	journalctl
File opened for reading	/proc/568/cmdline
File opened for reading	/proc/457/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/597/stat
File opened for reading	/proc/79/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/735/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1158/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1066/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/20/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/25/stat
File opened for reading	/proc/458/stat
File opened for reading	/proc/34/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/4/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/170/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/14/stat
File opened for reading	/proc/1106/cmdline
File opened for reading	/proc/169/cmdline
File opened for reading	/proc/159/stat
File opened for reading	/proc/161/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/173/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/455/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/163/cmdline
File opened for reading	/proc/657/cmdline
File opened for reading	/proc/1168/stat
File opened for reading	/proc/4/stat
File opened for reading	/proc/1519/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/98/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/167/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1132/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1053/cmdline
File opened for reading	/proc/12/stat
File opened for reading	/proc/160/stat
File opened for reading	/proc/1519/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1287/cmdline
File opened for reading	/proc/1141/stat
File opened for reading	/proc/1132/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/26/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1116/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1516/cmdline
File opened for reading	/proc/10/stat
File opened for reading	/proc/167/stat
File opened for reading	/proc/163/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/440/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/9/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1180/cmdline
File opened for reading	/proc/1252/stat
File opened for reading	/proc/1124/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/948/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/199/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/170/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/115/stat
File opened for reading	/proc/158/cmdline
File opened for reading	/proc/1430/stat
File opened for reading	/proc/667/stat
File opened for reading	/proc/269/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/30/stat
File opened for reading	/proc/1149/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/36/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/115/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
PID:1521

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1557

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1558

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1563

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1564

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1567

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1568

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1583

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1584

/bin/uname
uname -a
1⤵
PID:1533

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1534

/bin/cat
cat /etc/issue
1⤵
PID:1535

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1536

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1537

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads runtime system information
PID:1542

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1545

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1546

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1546

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1561

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1562

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1565

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1566

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1569

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1570

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1571

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1572

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1573

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1574

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1575

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1576

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1577

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1578

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1579

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1580

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1581

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1582

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1585

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1586

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/root/.ssh/authorized_keys

Filesize
381B

MD5
9da18d38b6dd4c4aa84642378d63fa89

SHA1
c5a976691e4b5963b5e760044f22cc9685268db6

SHA256
43062900b2539d8d1f67f30fa7042c56b53541f63875b5f0de5d8fbde0e0a8bf

SHA512
222b20b5b2ff8956c13dbac1f8d3f81435613b751913d65f4c4082ea9c1a7c8ae91be17a24ef4ae0c708bfe09daab552bb209615714d70acfaaed89c536c71b3

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